Answer:
x = 15
Step-by-step explanation:
angles 2 and 4 are supplementary so they add up to 180
2x + 10 + 4x + 80 = 180
6x + 90 = 180
6x = 90
x = 15
Answer:
She should have used One-half (9.4) (11.9) to represent the area of a single triangle
Step-by-step explanation:
The pyramid is composed by 4 triangles and 1 square
area of the square: base² = 9.4²
area of each triangle = 1/2*base*height = 1/2*9.4*11.9
surface area of the pyramid = 4*area of each triangle + area of the square = 4*(1/2*9.4*11.9) + 9.4²
Answer:
11 7/12 ft tall
Step-by-step explanation:
5 3/4 + (5/6*7)
139/12
11 7/12
Answer:
yes
Step-by-step explanation:
yes it will
Answer:
200 litres
Step-by-step explanation:
let g be gasoline used, d the distance travelled and s the speed, then the equation relating the quantities is
g = kd
← k is the constant of variation
To find k use g = 25, d = 100 and s = 100, then
25 = k × 100 ×
= k × 100 × 10 = 1000k ( divide both sides by 1000 )
0.025 = k
g = 0.025d
← equation of variation
When d = 1000 and s = 64, then
g = 0.025 × 1000 ×
= 0.025 × 1000 × 8 = 200